Type:
Educational Exhibit
Keywords:
Ultrasound, MR, CT, Kidney, Abdomen, Contrast agent-intravenous, Neoplasia, Cysts
Authors:
M. G. Costache Cojoaca1, C. Medar2, O.-E. Circovescu3, M. Jianu2, B. Popa2; 1Bucharest, 030171/RO, 2Bucharest/RO, 3Bucuresti/RO
DOI:
10.1594/ecr2018/C-2802
Background
The renal sinus is a central spacious cavity located at the medial aspect of the kidney that communicates with the perinephric space.
The renal sinus is surrounded by the kidney parenchyma laterally.
It is mainly occupied by adipose tissue and contains the major branches of the renal artery and vein along with the major and minor calices of the collecting system,
lymphatic channels,
nerve fibers of the autonomic nervous system,
and varying quantities of fibrous tissue.
[1-3] Therefore,
a broad spectrum of pathologic lesions can occur in the renal sinus from any of its constituents.
In addition,
secondarily involvement by surrounding renal parenchyma and adjacent retroperitoneal lesions can appear.
Lesions involving the renal sinus can be classified as tumorous (tumors that arise from the renal sinus,
tumors of the renal parenchyma that projects in to the renal sinus,
tumors of the retroperitoneal space that extend in to the renal sinus and metastases) or nontumorous (lipomatosis,
cysts,
vascular lesions,
inflammatory and other).
[4]